JP2001341709A - Apparatus for processing package in bag-making, filling and packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically eliminate defective products produced in processes for connecting belt-like films in a bag-making, filling and packaging by means of employing a simple apparatus. SOLUTION: For a device which is in a structure wherein pitches of marks 36 put on a belt-like film 10 for bag-making are detected by a mark detector and at the same time a relative speed between a belt-like film transferring motor and an operating motor for sealer to be applied to the film is corrected, based on a collation made between continuous pulse signals and the mark pitches and the sealer is applied to appropriate positions on the film, mark detecting cycle regions each in a specified width are set at the front and the rear of each of the marks and joint detecting cycle regions are set respectively between each of the mark detecting cycle regions, and the joints 41 of the film are detected by the mark detector at each of the joint detecting cycle regions and the detecting signals are transmitted therefrom, and a defective bag eliminating means is operated, based on the transmitted signals.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a belt-like film moving in a longitudinal direction, which is successively formed into a tube from the end by means of a cylinder, while each packaged object is loaded into the tube film at equal intervals. In addition, the present invention relates to an apparatus for treating a defective product caused by a joining process of the band-shaped film in a bag making and filling and packaging machine for sealing the tube film between the respective objects to be packaged.

[0002]

The roll diameter of the roll film used in the packaging machine is not limited, but is set to a diameter which can be easily handled by a manufacturer. Generally, when this kind of film is used continuously, the ends of a plurality of films are connected by an automatic film replenishing device provided in a packaging machine, or a large roll film in which a plurality of films are preliminarily added by an adhesive tape. Is provided. Therefore, in each of the films, the tape remains at the replenishing portion as a matter of course, and the film becomes a defective package in which the tape remains.

In order to mechanically remove the defective package, photographing equipment for capturing the image of the defective package is required, and relatively expensive equipment must be obtained. In the place, there is an annoyance that a worker has to remove a rarely generated defective package from a large number of packages.

[0004]

In order to automate the removal of defective packaging with a simple device, the present invention is to form a strip-shaped film moving in the longitudinal direction into a tube sequentially from the end by a cylinder-making means. Each packaged object is loaded into the tube film at regular intervals, and the tube film is pressure-sealed between the respective packaged objects by a sealer, and a pulse generator is operated by a transfer motor of the strip film. An output pulse and an output light shadow from a mark detector installed in the transfer area of the strip film are respectively received by a controller, and the controller checks the light shadow pitch for the output pulse, based on the light shadow pitch collapse, In a bag making, filling and packaging machine for correcting a relative speed between the film transfer motor and the operation motor of the sealer, Means for setting a mark detection cycle area before and after each detection mark in the system and a seam detection cycle area between the mark detection cycle areas as a soft image in the controller, and the seam detection cycle area Means for searching for a seam of the film by the mark detector, a means for transmitting a signal when the mark detector detects the seam, and a defective bag elimination means based on the transmitted signal. Means.

A relatively narrow mark detection cycle area is formed before and after each detection mark on the film, and a relatively wide seam detection cycle area is formed between the mark detection cycle areas. Set each as a soft image in the controller. While the film is moving, the mark detector catches the registration mark at substantially constant intervals in each mark detection cycle area and sends a signal to the controller to check the degree of delay. Even if the mark detector catches a joint that is rarely present in the area, since this detection area is outside the mark detection cycle area, the detection signal is not sent to the controller as a mark detection signal, and the seam detection is performed. It is processed as a signal to activate the defective bag elimination means. The defective bag elimination means
It refers to a unit that does not form a package having the joint, and a unit that discharges the package having the joint out of the line.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 2, a specific example of a bag making, filling and packaging machine sends a rolled belt-shaped film 10 in the direction of a tube forming means 13 by a roll 12 connected to a film transfer motor 11. The tube is formed by the tube forming means 13. On the other hand, the conveyor 15 operated by the carry-in motor 14 has a large number of attachments 17 provided at equal intervals on the endless chain 16, and carries each packaged object 18 into the tube film 20 at intervals of these attachments.

FIG. 3 shows the latter half of the packaging machine which is divided and shown in FIG. 2 in relation to the drawing area. As described above, the articles to be packaged contained in the tube film are held by the belt conveyor 21 to the sealer 22 sequentially. Send it towards. The sealer 22 reciprocates a frame 25 supporting a pair of upper and lower seal bars 23, 24 along a guide rail 27 by the action of a crank mechanism 26, while the pair of seal bars 23, 24 The relative rotation and the separation are repeated by the movement of the bell crank 29 which is reversed by the power of the reverse rotation motor 28, so that the film is made into a bag and is packaged as a package 30 and is carried out by the carry-out conveyor 31.

FIG. 1 shows details of a band-shaped film 10, and prints 35 such as trademarks applied to the film at equal intervals.
The registration marks 36 are printed at the same pitch as that shown in FIG. 4, but each mark 36 is caught by a mark detector 37 installed on the transfer path of the film strip 10 as shown in FIG. The controller 39 checks the input data from the circuit 38 based on the pulse signal transmitted from the pulse transmitter 40 that operates to detect the retardation state of the film and correct the retardation.
The structure of such means is the same as that of the pulse generator 40 shown in FIG.
Is input to the first input device 51 of the controller, while the mark to be caught by the mark detector 37 is input to the second input device 52.
Calculating means 54 for storing the data stored in data storage 53
The mark detection area 55 and the joint detection area 5
6 is formed. In the mark detection area 55, the retardation state of the film is monitored by the determination means 57, and the relative correction means 58 controls so as to adjust the relative speed between the two motors 11 and 26. On the other hand, the calculating means 54
The shift register 61 and the defective bag elimination means 62 are connected to each other, and the joint 60 is monitored by the mark detector 37 for detecting a mark professionally as described below. Without using the existing mark detector, the seam tape 42 of the film can be detected.

That is, assuming that the interval between the marks 36 printed on the film is 10000 pulse intervals as shown in FIG. 1, the interval β between the marks 36 is substantially constant. Catches each mark. The seam 41 of the film is marked 3
The manufacturer considers that there is no large change in the interval β of 6,
Since the adhesive tape 42 is stuck to that location, no large deviation appears between the mark pitch and the number of pulses. Subsequently, a relatively narrow mark detection cycle area of α0 is formed on the front side of each mark and α1 is formed on the rear side thereof,
A relatively wide joint detection cycle area θ is formed between the mark detection cycle areas α0 + α1. Note that such a film configuration is not actually configured as a shape on the film, but a soft image as shown in FIG. 5 is programmed as data in the controller.

In synchronization with the movement of the belt-like film, the data shown in FIG. The controller functions to catch the mark only during the passage of the mark detection cycle area α of eg 1000 pulses to the mark detector,
The mark detector monitors the presence of the joint tape 42 in each joint detection cycle area θ corresponding to the other 9000 pulses. Therefore, in FIG. 4, the mark detector 37 has the interval 45 smaller than the mark pitch β.
Even if the tape 42 is caught, the control for measuring the mark pitch β and adjusting the film position does not interfere.

As shown in FIG. 7, when the program is started, the above-mentioned program is executed to form a mark detection area S1-, a mark detection area disappears S2-, a seam detection area S3-, and a seam detection area S4. If a circuit is formed and the mark position is abnormal, S6 and S7 adjust the speed of the film transfer motor 11 or the speed of the sealer operation motor 26 in FIG. 2 to control the film position. On the other hand, when the presence of the seam is detected S8 and S9, the time is up at the same time, and when the seam caught by the mark detector 37 of FIG. When the loading of the film is temporarily stopped or when the package formed by the film having the seam reaches the unloading conveyor 31 shown in FIG. 3, the package 31 is inclined by inclining the conveyor 31. Discharge outside.

FIG. 8 shows an embodiment in which an oscillating-type package elimination conveyor 49 is provided on the side of the discharge conveyor 31. The conveyor 49 has a one-sided shaft as an obstacle to carry out a defective bag elimination signal. The package 30 protrudes upward and is removed from the line.

FIG. 9 is an explanatory view of another embodiment. Each mark 51 is caught by a mark detector 55 installed on the transfer track of the strip film 50, and a pulse signal transmitted from a pulse transmitter 57 operated by the power of a film transfer motor 56 is input to a controller 58. Is not different from the previous embodiment. However, if the mark pitch of the film is 10,000 pulses,
+ -100 pulse error, ie 9900-10100
In the range, the controller 58 does not react. Then, after the mark detector 55 captures the leading mark 51a and subsequently captures the seam tape 60 with 3500 pulses, the elapsed pulse until the mark detector 55 detects the subsequent trailing mark 51b is 650 as set
If 0 + -100, the controller 58 detects the tape 60 as a seam and continuously transports the film 50 as it is. However, if the mark pitch is insufficient or exceeds the set pulse due to the intervention of the tape 60, the packaging is performed. Since the film cutting pitch of the machine does not match the mark pitch, the controller 58 stops the film transfer and issues an alarm.

FIG. 10 is an apparatus and a flowchart for explaining the above-mentioned operation. A pulse generated from a pulse generator 57 is inputted to a first input device 61 of the controller, while a mark to be catched by a mark detector 55 is made second. The data is input to the input device 62, and both the input data and the data storage 63
Is compared with the stored data in the calculation means 64. When the mark detector 55 detects the seam tape 65, the presence or absence of the preceding and succeeding mark pitches is determined by the number of pulses due to the interposition of the tape. If the mark pitch is normal 66, the operation is continued. In order to eliminate the bag attached with the tape, the defective bag eliminating means 67 is operated. However, if the preceding and following mark pitches are abnormal 68 due to the interposition of the tape, the film transfer operation is stopped 69.

[Brief description of the drawings]

FIG. 1 is an explanatory view of a belt-like film.

FIG. 2 is a side view of the first half of the bag making, filling and packaging machine.

FIG. 3 is a side view of the latter half of the packaging machine.

FIG. 4 is an explanatory diagram of film and mark detection.

FIG. 5 is an explanatory diagram of an image program.

FIG. 6 is a block diagram of the apparatus.

FIG. 7 is an explanatory diagram using a flow cheat.

FIG. 8 is a view showing an embodiment of a carry-out conveyor.

FIG. 9 is an explanatory view of a strip film according to another embodiment.

FIG. 10 is an explanatory diagram for synthesizing a flowchart with an apparatus according to another embodiment.

[Explanation of symbols]

 10, 50: strip-shaped film 11, 56: film transfer motor 13: cylindrical means 14: carry-in motor 16 ... carry-in conveyor 18: packaged object 20: tube film 22 ... sealer 23 ... seal bar 26 ... sealer operating motor 30 ... packaging Body 31 ... Conveying conveyor 36,51 ... Mark 37 ..., 55 Mark detector 38 ... Input circuit 39,58 ... Controller 40,57 ... Pulse generator 42,60 ... Adhesive tape 41 ... Seam 49 ... Obstacle

Claims (6)

[Claims] 1. A mark detector for catching the pitch of a mark marked on a bag-shaped band-shaped film, and based on a comparison between a continuous pulse signal and the mark pitch,
In the means for correcting the relative speed between the belt-like film transfer motor and the sealer operating motor acting on the film so that the sealer acts on an appropriate position of the film, a predetermined value is provided before and after each of the marks. A mark detection cycle area having a width, and a seam detection cycle area is set between the mark detection cycle areas, respectively.
In the seam detection cycle area, the seam of the film is searched for by the mark detector and a detection signal is transmitted,
A method of operating the defective bag elimination means by the transmission signal. 2. A belt-like film moving in a longitudinal direction is formed into a tube sequentially from an end by a cylinder forming means.
Each packaged object is carried into the tube film at equal intervals in a row, and the tube film is pressure-sealed between the respective packaged objects by a sealer, and a pulse generator operated by a transfer motor of the strip film. The output pulse and the output light shadow from the mark detector installed in the transfer area of the strip film is received by the controller, and the controller compares the light shadow pitch with respect to the output pulse, based on the light shadow pitch collapse. In a bag making and filling machine for correcting a relative speed between the film transfer motor and the operation motor of the sealer, a connection between a mark detection cycle area before and after each detection mark in the film and each mark detection cycle area is provided. Means for setting an eye detection cycle area as a soft image in the controller, A means for searching for a seam of the film in the seam detection cycle area by the mark detector, a means for transmitting a signal when the mark detector detects the seam, and a failure based on the transmission signal. Means for activating the bag elimination means. 3. The means for eliminating defective bags is such that a conveyor for carrying articles to be packaged into the belt-shaped film at equal intervals is temporarily stopped by a signal transmitted when the mark detector detects a joint. 3. The device according to claim 2, wherein: 4. A means for eliminating a defective bag is provided by tilting a package discharge conveyor provided behind a seal bar in a package transfer direction with a signal transmitted when a mark detector detects a joint. The apparatus according to claim 2, wherein the defective package is dropped out of the conveyor by the inclination. 5. A means for eliminating a defective package being transported out of the line is provided by a mark detector for connecting an obstacle installed along a package transport conveyor behind a seal bar in a package transport direction. 3. The apparatus according to claim 2, wherein a signal transmitted upon detection protrudes onto the carry-out conveyor and causes the defective package to fall out of the conveyor. 6. A mark detector for catching the pitch of a mark marked on a bag-shaped band-shaped film, and based on a comparison between a continuous pulse signal and the mark pitch,
In the means for correcting the relative speed between the strip film transport motor and the sealer operating motor acting on the film so that the sealer acts at an appropriate position of the film, a space between the front and rear marks in the strip film is provided. If the total number of pulses between the marks and the marks before and after the mark is within the allowable set value range, the transfer of the film is continued by the seam tape formed by the mark detector. The defective bag provided with the tape is processed by the elimination means, but when the total number of pitches between the joint tape of the film and the mark before and after the film exceeds an allowable set value range, the film transfer is stopped. Method.